I have a situation like this one:
| id | a | b | c |
|---|---|---|---|
| a | 0 | 0 | 0 |
| b | 0 | 0 | 3 |
| c | 0 | 11 | 2 |
The observations are frequencies of how many times a contacts b, ecc...
I need a dataframe like this one:
| from | to | frequency |
|---|---|---|
| a | b | |
| a | c | |
| a | a | |
| b | a | |
| b | c | |
| b | b | |
| c | a | |
| c | b | |
| c | c |
Converting adjacency matrix into table with from/to/frequency
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